Add CI testing matrix

Author: thecrypticace

.github/workflows/ci.yml

@@ -0,0 +1,32 @@
+name: Run Tests
+on:
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  tests:
+    strategy:
+      matrix:
+        node: [22]
+        os: [ubuntu-latest, macos-latest, windows-latest]
+
+    runs-on: ${{ matrix.os }}
+    name: Run Tests - Node v${{ matrix.node }} / ${{ matrix.os }}
+
+    steps:
+      - uses: actions/checkout@v4
+      - uses: pnpm/action-setup@v4
+      - uses: actions/setup-node@v4
+        with:
+          cache: 'pnpm'
+          node-version: ${{ matrix.node-version }}
+
+      - name: Install dependencies
+        run: pnpm install
+
+      - name: Run tests
+        run: |
+          cd packages/tailwindcss-language-server &&
+          pnpm run build &&
+          pnpm run test